Box to Pin/Box Sub Adapter for DTH Drilling Tools 2-7/8 API Reg with API Spec 5dp Standards

• Customization: Available
• After-sales Service: One Year
• Warranty: One Year
• Model NO.: 2 7/8 REG
• Certification: ISO 9001:2008
• Standard: AISI, ASTM
• Surface Treatment: Carburization
• Manufacturing Process: Forging
• Material: 42CrMo
• Type: Box to Box, Pin to Pin, Box to Pin
• Advantage: Wear Resistant,with Competitive Price
• Product Type: Rock Drilling Tools
• Diamter: 76mm, 89mm, 102mm, 114mm, 127mm, 140mm
• Transport Package: Wooden Box
• Specification: Csutomed
• Trademark: STAROCKDRILL
• Origin: China
• Production Capacity: 60000sets/Month

Product Description

DTH Tools API Drill Pipe Coupling Pin Box Sub Adaptor for Water Well Drill Pipe Tool Joints

Drill rod adapters are essential components for connecting drill rods together during drilling operations. At Starockdrill, we understand the importance of high-quality adapters that can withstand the rigors of drilling and provide reliable performance in all conditions.

Specification

 

Features

1.At Starockdrill, we prioritize the stability and safety of our drill rod adapters during the connection process. Each adapter undergoes strict inspection to ensure its quality and reliability.

2.Our drill rod adapters feature threads that comply with API Spec 72 and API Spec 5DP standards, ensuring that they meet industry requirements for quality and performance.

Product Introduction

Our drill rod adapters are made of high-strength 42CrMo steel and are designed using precision CNC technology for maximum durability and reliability. We follow international API standards to ensure that our adapters meet industry requirements for quality and performance.

Trusted by global drilling contractors and customers who looking for high quality drilling tools for their drilling rigs and rock drilling machines, we would be honored to have the opportunity to earn your trust and provide you with rock drilling products that meet your application needs.

Application scenarios

The versatility of our DTH Drill Rod Adapters makes them widely applicable across various industries, including open-pit mining, underground mining, tunneling, anchoring projects, blast furnace tapping, tunnel construction, hydroelectric projects, quarrying, and various other construction projects.andling, land preparation.

Technical Specifications

(Custom configurations available upon request.)

Female Thread	Male Thread	Length(MM)	OD(MM)	Spanner(MM)	Weight(KG)
2 3/8’’REG	2 3/8’’REG	140	77	65	4.0
2 3/8’’REG	2 3/8’’REG	140	90	65	5.5
2 3/8’’REG	2 3/8’’IF	144	90	65	5.5
2 3/8’’REG	2 7/8’’REG	130	95	65	8.0
2 3/8’’REG	3 1/2’’REG	120	102	65	10.5
2 3/8’’IF	2 3/8’’REG	164	90	65	6.8
2 7/8’’REG	2 3/8’’REG	154	90	65	6.5
2 7/8’’REG	3 1/2’’REG	120	115	95	11
3 1/2’’REG	2 3/8’’REG	219	115	95	12.5
3 1/2’’REG	2 3/8’’IF	160	115	95	10.8
3 1/2’’REG	2 7/8’’REG	160	115	95	10.8
3 1/2’’REG	2 7/8’’IF	160	115	95	10.8
3 1/2’’REG	3 1/2’’REG	160	115	95	10.5
3 1/2’’REG	4 1/2’’REG	132	146	120	16
4 1/2’’REG	3 1/2’’REG	235	146	95	17

Drawings & Dimensions

The DTH hammers are suitable for drilling holes ranging from 64 to 1200 millimeters in diameter. Depending on the output power of your air compressor, we offer three types of hammers for you to choose from, allowing you to select the most suitable hammer to ensure optimal drilling efficiency and results:

1. Low Air Pressure (0.5-0.7 cubic meters/minute)

2. Medium Air Pressure (0.7-1.5 cubic meters/minute)

3. High Air Pressure (7-30 cubic meters/minute)

Packaging & Shipping

After Sales Service

Standard Warranty: 12 months or 2,000 operating hours (whichever comes first).
Extended Warranty: Optional coverage up to 36 months.
Global Support: 24/7 technical assistance and spare parts supply.
Training: On-site or remote operation/maintenance training.

Company Profile

HENAN STAROCKDRILL EQUIPMENT CO., LTD

Welcome to Starockdrill, a specialist manufacturer of rock drilling tools. Since our establishment in 2008, Henan Starockdrill Equipment Co., Ltd. has been committed to the research, development, and production of rock drilling tools. Our mission is to provide customers with high-quality, efficient, and reliable drilling tools and solutions, helping them enhance productivity, reduce costs, and create more value.

Why Choose Us?

Other Products

OEM/ODM capabilities
Competitive pricing & bulk discounts
Fast shipping & customs clearance support
Turnkey project solutions

Threaded Drill Rods
Coupling Sleeves
Threaded Drill Bits
Eccentric Casing System
Double Casing Drilling System

Certifications

Project Case

FAQ

Q: What’s the lead time for orders?
A: Standard models ship in 15–30 days; customized units require 30–45 days.

Q: Do you provide after-sales service overseas?
A: Yes, we have partnered service centers in key regions.

Q: Can I request a customized bucket size?
A: Absolutely! We offer tailored attachments.

Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).

Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.